Aurora & Space WeatherHome › Geomagnetic history › 2001
Geomagnetic activity in March 2001
Mean Ap20.2No. 148 of 1138
G1+ days9
G3+ days3
Max Ap19231 Mar 2001
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Mar 2001 | 5- | 19 | G1 |
| 5 Mar 2001 | 5o | 20 | G1 |
| 19 Mar 2001 | 7- | 37 | G3 |
| 20 Mar 2001 | 7+ | 74 | G3 |
| 23 Mar 2001 | 5o | 28 | G1 |
| 27 Mar 2001 | 6o | 27 | G2 |
| 28 Mar 2001 | 6+ | 44 | G2 |
| 29 Mar 2001 | 5- | 22 | G1 |
| 31 Mar 2001 | 9- | 192 | G5 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| March 2000 | 8.9 | 2 | 0 |
| March 2001 | 20.2 | 9 | 3 |
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.
About this page
Mean Ap 20.2 in March 2001, No. 148 of 1138 months since 1932; 9 days reached G1 or higher.